PREFIX
(用于以 m, p 或 b 開頭的單詞前,構成反義詞)表示“不”,“無”,“非”
Im- is added to words that begin with 'm', 'p', or 'b' to form words with the opposite meaning.
例句
He implied that we were emotionally immature...
他暗示我們情感上還不成熟。
Don't stare at me — it's impolite!...
別盯著我看——這是不禮貌的!